نتایج جستجو برای: gutman index

تعداد نتایج: 396312  

Journal: :Journal of Applied Mathematics 2023

Topological polynomial and indices based on the distance between vertices of a connected graph are widely used in chemistry to establish relation structure properties molecules. In similar way, chromatic versions certain topological related have also been discussed recent literature. this paper, we present Schultz Gutman polynomials expanded form Hosoya polynomials, then derive these for specia...

Journal: :NeuroImage: Clinical 2018
P. K. Douglas Boris Gutman Ariana Anderson C. Larios Katherine E. Lawrence Katherine Narr Biswa Sengupta Gerald Cooray David B. Douglas Paul M. Thompson James J. McGough Susan Y. Bookheimer

Please cite this article as: P.K. Douglas, Boris Gutman, Ariana Anderson, C. Larios, Katherine E. Lawrence, Katherine Narr, Biswa Sengupta, Gerald Cooray, David B. Douglas, Paul M. Thompson, James J. McGough, Susan Y. Bookheimer , Hemispheric brain asymmetry differences in youths with attention-deficit/hyperactivity disorder. The address for the corresponding author was captured as affiliation ...

2008
Karl H. Schuleri Luciano C. Amado Andrew J. Boyle Marco Centola Anastasios P. Saliaris Matthew R. Gutman Konstantinos E. Hatzistergos Behzad N. Oskouei Jeffrey M. Zimmet Randell G. Young Alan W. Heldman Albert C. Lardo Joshua M. Hare

Karl H. Schuleri, Luciano C. Amado, Andrew J. Boyle, Marco Centola, Anastasios P. Saliaris, Matthew R. Gutman, Konstantinos E. Hatzistergos, Behzad N. Oskouei, Jeffrey M. Zimmet, Randell G. Young, Alan W. Heldman, Albert C. Lardo, and Joshua M. Hare Division of Cardiology, Department of Medicine and Institute for Cell Engineering, Johns Hopkins University School of Medicine and Osiris Therapeut...

Journal: :Journal of Molecular Structure 2023

Recently, based on elementary geometry, Gutman proposed several geometry-based invariants (i.e., $SO$, $SO_{1}$, $SO_{2}$, $SO_{3}$, $SO_{4}$, $SO_{5}$, $SO_{6}$). The Sombor index was defined as $SO(G)=\sum\limits_{uv\in E(G)}\sqrt{d_{u}^{2}+d_{v}^{2}}$, the first $SO_{1}(G)= \frac{1}{2}\sum\limits_{uv\in E(G)}|d_{u}^{2}-d_{v}^{2}|$, where $d_{u}$ denotes degree of vertex $u$. In this paper, w...

Journal: :Random Struct. Algorithms 2016
Mark Rudelson Ofer Zeitouni

We present estimates on the small singular values of a class of matrices with independent Gaussian entries and inhomogeneous variance profile, satisfying a broad-connectedness condition. Using these estimates and concentration of measure for the spectrum of Gaussian matrices with independent entries, we prove that for a large class of graphs satisfying an appropriate expansion property, the Bar...

2012
REINHOLD COHN

Patentee(s): Yissum Research Development Company of The Hebrew University of Jerusalem of Hi Tech Park Edmond Safra Campus Givat-Ram PO Box 39135 Jerusalem 91390 Israel Inventor(s): Rav-Acha, Alexander Pritch, Yael Peleg, Shmuel Gutman, Avital Title: Method and system for video indexing and video synopsis Term: Twenty years from 9 December 2007 Date Accepted: 21 October 2011 Date Sealed: 23 Feb...

Journal: :International Journal of Quantum Chemistry 2021

Hexagonal chains are a special class of catacondensed benzenoid system and phenylene polycyclic aromatic compounds. Recently, A family Sombor indices was introduced by Gutman in the chemical graph theory. It had been examined that these may be successfully applied on modeling thermodynamic properties In this paper, we study expected values random hexagonal chains, consider some graphs such as g...

Journal: :Mathematical and Computer Modelling 2008
Shoujun Xu Heping Zhang

For a graph G we denote by dG(u, v) the distance between vertices u and v in G, by dG(u) the degree of vertex u. The Hosoya polynomial of G is H(G) = ∑ {u,v}⊆V (G) x dG (u,v). For any positive numbers m and n, the partial Hosoya polynomials of G are Hm(G) = ∑ {u, v} ⊆ V (G) dG (u) = dG (v) = m xdG (u,v), Hmn(G) = ∑ {u, v} ⊆ V (G) dG (u) = m, dG (v) = n xdG (u,v). It has been shown that H(G1) − ...

Journal: :Discrete Mathematics, Algorithms and Applications 2021

Let [Formula: see text] be a simple graph with vertices, edges having Laplacian eigenvalues text]. The energy LE[Formula: is defined as text], where the average degree of Radenković and Gutman conjectured that among all trees order path has smallest energy. family diameter In this paper, we show any tree greater than thereby proving conjecture for We also truth number non-pendent vertices at mo...

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